The Calliergon giganteum grows in the arctic tundra which is a harsh cold environment in the Northern Hemisphere within the arctic circle.
Salix arctica whose common name is Arctic willow or rock willow can be found in the North American tundra. The North American tundra consists of Northern Alaska and Northern Canada. It stretches from 52 N to 65 N and from 60 W to 165 W.
Bearberry is a low growing evergreen. It has a stem that rises 2-8" off the ground and is covered in a thick bark and fine silky hairs. On the stem are many oval-shaped, leathery leaves that are _" to 1" long. The flowers have five petals and are pale pink or white. The petals are only _" long and are curled around the narrow center. They bloom anywhere between March and June. The fruit is a red berry 3/8" in diameter. Bearberry gets its name because bears like to feast on these berries.
Pasque flower is a pretty tundra plant. It is a member of the Ranunculaceae family, which is Latin for little frog. The name was given to the family because a group of plants in this family grow where frogs live.
Caribou moss grows in arctic and northern regions around the world. It grows on the ground and on rocks. It looks like a foamy, gray-green spongy mass, and grows to be 1 to 4 inches high. The stems, or stocks, are hollow, and branch out many times. Although it is called caribou moss, it is actually a lichen.
The Labrador tea plant grows to be 4 to 5 feet. It will grow up straight in the southern latitudes of the tundra, but in the colder northern latitudes it will creep over the ground forming a carpet. It has woolly branches with narrow 1 to 2 inch leaves which are smooth on the upper side, with rusty hairs underneath. They droop slightly and edges are rolled under, and are a leathery green in color. At the ends of the branches are tiny clusters of white flowers with protruding stamen, which bloom in June and July.
The twigs on a willow are soft, slender, and they bend easily. A willow has thin branches. The leaves are narrow and grow alternately on the branch. Some leaves have serrated edges.